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Journal ArticleDOI

Swelling and dye adsorption properties of radiation induced N-vinyl-2-pyrrolidone/acrylonitrile hydrogels

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TLDR
The influence of radiation dose and feed composition on the swelling properties, diffusional behavior of water and diffusion coefficients of the hydrogel systems were examined in this article, where N-vinyl-2-pyrrolidone/acrylonitrile hydrogels were used for adsorption of some water soluble dye such as basic blue 9, tetraethyl rhodamine, xylidine ponceau 2R, indigo carmine, helianthin and erythrosine.
Abstract
Swollen hydrogels were prepared by γ-radiation copolymerization of N-vinyl-2-pyrrolidone and acrylonitrile. The influence of radiation dose and feed composition on the swelling properties, diffusional behavior of water and diffusion coefficients of the hydrogel systems were examined. N-vinyl-2-pyrrolidone/acrylonitrile hydrogels were swollen in the range 50–850%. Water diffusion to the hydrogels generally was a non-Fickian type diffusion. The hydrogel were used in the studies of adsorption of some water soluble dye such as basic blue 9, tetraethyl rhodamine, xylidine ponceau 2R, indigo carmine, helianthin and erythrosine, and of a vitamin riboflavin (Vitamin B2).

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Radiation synthesis of hydrogels to enhance sandy soils water retention and increase plant performance

TL;DR: In this paper, the effect of different types and amounts of hydrogels added to sandy soil on the emergence, vegetative growth, and wilting time of corn (Zea mays) plants was investigated.
Journal ArticleDOI

Dye adsorption characteristics of alginate/polyaspartate hydrogels

TL;DR: In this article, the removal of some basic dyes, such as Methylene Blue, Malachite Green and Methyl Orange, using alginate or alginates/polyaspartate composite gel beads was examined using a batch sorption technique.
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Multicavity triethylenetetramine-chitosan/alginate composite beads for enhanced Cr(VI) removal

TL;DR: A triethylenetetramine (TEAE) modified chitosan microbeads with multicavity structure encapsulated in alginate backbone (named as HCTA) was fabricated for Cr(VI) removal from aqueous solution as mentioned in this paper.
Journal ArticleDOI

Swelling and dye sorption studies of acrylamide/2-acrylamido-2-methyl-1-propanesulfonic acid/bentonite highly swollen composite hydrogels

TL;DR: In this article, the effects of acrylamide with 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) and a clay such as bentonite (Bent) on water and dye sorption properties were investigated.
Journal ArticleDOI

New sorbent hydrogels for removal of acidic dyes and metal ions from aqueous solutions

TL;DR: In this article, amine groups were incorporated onto PHMA hydrogels by amination reaction with different diamines, and they were used as sorbent for removal of indigo carmine and Cu(II) ion, as a model dye molecule and metal ion from aqueous solutions.
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